They already exist. $dayjob bought some 64GB ssds. They were about $7500USD per drive.

While not hard drives, at $dayjob we bought a new server out with 16 x 64TB nvme drives. We don’t even need the speed of nvme for this machines roll. It was the density that was most appealing.

It feels crazy having a petabytes of storage (albeit with some lost to raid redundancy). Is this what it was like working in tech up till the mid 00s with significant jumps just turning up?

You can also use systemctl status $pid to find out what service a process is from.